unison VS awscli-local

Short version: no type classes (yet)

Longer version:

Building upon what Quekid5 mentioned, Unison abilities are an implementation of what is referred to as algebraic effects in programming language literature. They represent capabilities like IO, state, exceptions, etc. They aren't really a replacement for type classes, though in some cases you can shoehorn abilities in where you might otherwise use a type class.

For someone coming from a Haskell background, I think that abilities are closer to a replacement for monad transformers. But in my opinion they are much more ergonomic.

Discusson of type classes comes up a lot. Here is a long-standing GitHub issue: https://github.com/unisonweb/unison/issues/502

For what it's worth, I've written Unison quite a lot over the past few years and while I've missed type classes at times, I think that reading unfamiliar code is easier without them. There's no implicit magic; you can see exactly what is being passed into a function. So far I've been happy with a bit more verbosity for the sake of readability.

I've been following the Unison lang [1] for quite some. Wing seem to set similar goals? From the first glance Wing looks more polished, but there's "The Big Idea" behind Unison - is there something similar?

[1]: https://github.com/unisonweb/unison

in haskell it looks like this, you specify the language extensions you want at the top of the source files: https://github.com/unisonweb/unison/blob/trunk/unison-core/src/Unison/ABT.hs

they adjusted my ticket to be a bug fix on their part.

I think Unison is going in this direction. Imo this is a mistake, as a program language functions not just as specification for the machine, but also as communication between programmers. Allowing the introduction of arbitrary dialects to suit individual preferences seems like it would interfere with that communication.

> not really.. as soon as you need cloud resources that are not in your k8s cluster, you end up with the cloud in your development loop.

https://github.com/localstack/awscli-local

https://github.com/fsouza/fake-gcs-server

https://cloud.google.com/sdk/docs/downloads-docker

I’ve used all of these locally to great success.

Glad to hear you guys want to interop with npm. Is wing going to be a superset of js then?

awslocal CLI

https://localstack.cloud/ https://github.com/localstack/awscli-local

I also used awslocal as my CLI tool for interacting with my Localstack AWS environment. Assuming you already have aws cli installed, awslocal can be installed using:

If you want to test your created resources, you can always use the official AWS-CLI. However I found a library called awscli-Local, which already knows the LocalStack endpoints and you can use just like the official one from AWS. I’m presenting a couple of useful commands that you might need: